As explained in a previous section, Email Autoresponder logs every follow-up and broadcast message sent to each of your subscribers. You can clear the entire send log for the selected subscribers with this feature.
Remember that if no filter is in place (ie your list is unfiltered), this operation will clear the logs of every subscriber in the database.
To clear the send logs based on the current filter, select Subscribers » Filter » Group Tasks » Group Clear Send Logs from the menu bar. You will be asked to confirm your choice.